var snowsrc = "assets/styles/img/snow.png";
// Configure below to change number of snow to render 
var no = 100;
// Configure whether snow should disappear after x seconds (0=never): 
var hidesnowtime = 0;
// Configure how much snow should drop down before fading ("windowheight" or "pageheight") 
var snowdistance = "pageheight";

///////////Stop Config////////////////////////////////// 

var ie4up = (document.all) ? 1 : 0;
var ns6up = (document.getElementById && !document.all) ? 1 : 0;

function iecompattest() {
return (document.compatMode && document.compatMode != "BackCompat") ? document.documentElement : document.body
}

var dx, xp, yp; // coordinate and position variables 
var am, stx, sty; // amplitude and step variables 
var i, doc_width = 800, doc_height = 600;

if (ns6up) {
doc_width = self.innerWidth;
doc_height = self.innerHeight;
} else if (ie4up) {
doc_width = iecompattest().clientWidth;
doc_height = iecompattest().clientHeight;
}

dx = new Array();
xp = new Array();
yp = new Array();
am = new Array();
stx = new Array();
sty = new Array();
snowsrc = (snowsrc.indexOf("dynamicdrive.com") != -1) ? "assets/styles/img/snow.png" : snowsrc
for (i = 0; i < no; ++i) {
dx[i] = 0; // set coordinate variables 
xp[i] = Math.random() * (doc_width - 50); // set position variables 
yp[i] = Math.random() * doc_height;
am[i] = Math.random() * 20; // set amplitude variables 
stx[i] = 0.02 + Math.random() / 10; // set step variables 
sty[i] = 0.7 + Math.random(); // set step variables 
if (ie4up || ns6up) {
if (i == 0) {
document.write("<div id=\"dot" + i + "\" style=\"POSITION: absolute; Z-INDEX: " + i + "; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><a href=\"http://dynamicdrive.com\"><img src='" + snowsrc + "' border=\"0\"><\/a><\/div>");
} else {
document.write("<div id=\"dot" + i + "\" style=\"POSITION: absolute; Z-INDEX: " + i + "; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><img src='" + snowsrc + "' border=\"0\"><\/div>");
}
}
}

function snowIE_NS6() { // IE and NS6 main animation function 
doc_width = ns6up ? window.innerWidth - 10 : iecompattest().clientWidth - 10;
doc_height = (window.innerHeight && snowdistance == "windowheight") ? window.innerHeight : (ie4up && snowdistance == "windowheight") ? iecompattest().clientHeight : (ie4up && !window.opera && snowdistance == "pageheight") ? iecompattest().scrollHeight : iecompattest().offsetHeight;
for (i = 0; i < no; ++i) { // iterate for every dot 
yp[i] += sty[i];
if (yp[i] > doc_height - 50) {
xp[i] = Math.random() * (doc_width - am[i] - 30);
yp[i] = 0;
stx[i] = 0.02 + Math.random() / 10;
sty[i] = 0.7 + Math.random();
}
dx[i] += stx[i];
document.getElementById("dot" + i).style.top = yp[i] + "px";
document.getElementById("dot" + i).style.left = xp[i] + am[i] * Math.sin(dx[i]) + "px";
}
snowtimer = setTimeout("snowIE_NS6()", 10);
}

function hidesnow() {
if (window.snowtimer) clearTimeout(snowtimer)
for (i = 0; i < no; i++) document.getElementById("dot" + i).style.visibility = "hidden"
}

if (ie4up || ns6up) {
snowIE_NS6();
if (hidesnowtime > 0)
setTimeout("hidesnow()", hidesnowtime * 1000)
}